Grundfos SRG Installation And Operating Instructions Manual page 421

ALR-20/A relay
2 10 4 1 3
A1 A2
Rel.
Netz
Netz 230V 40-60Hz P3VA
Rel. Ue 400V le 2.5A AC15
ALR 20/A
5 7
48 42.5
421